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HomeBackend DevelopmentPHP TutorialSimilar text function syntax and usage in PHP

This article mainly introduces the syntax and usage of similar text function in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

1, usage of similar_text

If I want to calculate the similarity between "ly89cn" and "ly89", there are two ways to express it


## The code is as follows:

echo similar_text('ly89cn', 'ly89');

This outputs 4 because they have 4 equal characters



The code is as follows:

similar_text('ly89cn', 'ly89', $percent);
echo $percent;

This outputs 80, $percent represents the percentage, description They are 80% similar

Of course, you can also compare two Chinese characters, such as "Wang Yelou's personal blog" and "Wang Yelou"


The code is as follows:

echo similar_text('王业楼的个人博客', '王业楼');
    这样输出9,表示他们的9个字节数相等


The code is as follows:

similar_text('Wang Yelou's personal blog', 'Wang Yelou', $percent);
echo $percent;

Output 54.545454545455, please note that Chinese characters may not be accurate!

PHP similar_text() function

Example

Calculate the similarity of two strings and return the matching character Number:


The code is as follows:

<?php
echo similar_text("Hello World","Hello Shanghai");
?>

Running example

Definition and usage

The similar_text() function calculates the similarity of two strings.

This function can also calculate the percentage similarity of two strings.

Note: levenshtein() function is faster than similar_text() function. However, the similar_text() function provides more accurate results with fewer modifications required.

Grammar


The code is as follows:

similar_text(string1,string2,percent)

参数 描述
string1 必需。规定要比较的第一个字符串。
string2 必需。规定要比较的第二个字符串。
percent 可选。规定供存储百分比相似度的变量名。

Technical details

Return value: Returns the number of matching characters in the two strings.
PHP version: 4
##More examples

Example 1

Calculate the percentage similarity between two strings:


The code is as follows:

similar_text("Hello World","Hello Shanghai",$percent);
echo $percent. "%";
?>

Summary: The above is the summary of this article All content, I hope it will be helpful to everyone's study.

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